我在發佈這個Shiny應用程序時遇到了一些麻煩。對於我的問題,我不認爲ui.R是相關的。這裏是server.R:閃亮的應用程序連接到MySQL數據庫
library(shiny)
library(RMySQL)
library(tidyverse)
library(colorspace)
library(ggplot2)
### CONNECT AND QUERY THE DATABASE
### uncomment the next line to reconnect to server & re-query the database
source("http://www.mvabl.com/Dashrock/MySQL_connect_query.R")
con <- dbConnect(MySQL(),
user = 'shiny_apps',
password = '####',
host = 'mysql.mvabl.com',
dbname='sandbox191')
qmain <- dbSendQuery(con, "SELECT * FROM sizes;")
sizes <- as.data.frame(dbFetch(qmain,n=-1),na.rm=TRUE)
### GENERATE GGPLOT
colors17 <- c("#9D8FAC","#8E96B0","#7F9BB0","#71A0AD","#67A5A7","#63A89E","#64AB94","#6BAC88","#77AD7B","#85AD70","#94AC66","#A4AA5F","#B5A75B","#C4A35B","#D39F5F","#DF9C67","#E99872")
colors6 <- c("#9D8FAC","#6FA1AC","#66AB8F","#8EAC6A","#C1A45A","#E99872")
sizes$Size_Cat <- factor(sizes$Size_Cat,
levels = c("n1_4","n5_9","n10_19",
"n20_49","n50_99","n100_249",
"n250_499","n500_999","n1000",
"n1000_1","n1000_2","n1000_3",
"n1000_4"))
sizes$market <- factor(sizes$market,
levels = c("NYC","LA","CHI","DC","SF","BOS"))
sizes <- sizes %>%
filter(market %in% c("NYC","SF"),
Size_Cat %in% c("n50_99","n100_249","n250_499"))
shinyServer(function(input, output) {
output$plot <- renderPlot({
g <- ggplot(sizes)
g + geom_bar(stat = "identity",
position = "dodge",
aes_string(x=input$x, y=input$y))
if (input$color != 'None')
g <- g + aes_string(color=input$color)
facets <- paste(input$facet_row, '~', input$facet_col)
if (facets != '. ~ .')
g <- g + facet_grid(facets)
g <- g + scale_fill_manual (values=colors17)
g <- g + facet_wrap(~ input$facet_row)
g <- g + labs(y = "Number of Companies", title = "Market Structure")
g <- g + theme(strip.text.x = element_text(size = 8),
axis.text.x = element_text(angle=90, size=6))
if (input$jitter)
g <- g + geom_jitter()
if (input$smooth)
g <- g + geom_smooth()
print(g)
}, height=700)
})
dbHasCompleted(qmain)
dbClearResult(qmain)
dbDisconnect(con)
結果我得到的是「對象‘大小’找不到」
的事情是,當我在本地運行確切相同的代碼,但沒有 Shiny部分,我得到預期的結果。下面是代碼:
library(RNeo4j)
library(tidyverse)
library(stringr)
library(MASS)
library(RColorBrewer)
library(colorspace)
### uncomment the next 2 lines to reconnect to server & re-query the database
setwd("~/Desktop/Dashrock/")
source("http://www.mvabl.com/Dashrock/MySQL_connect_query.R")
colors17 <- c("#9D8FAC","#8E96B0","#7F9BB0","#71A0AD","#67A5A7","#63A89E","#64AB94","#6BAC88","#77AD7B","#85AD70","#94AC66","#A4AA5F","#B5A75B","#C4A35B","#D39F5F","#DF9C67","#E99872")
colors6 <- c("#9D8FAC","#6FA1AC","#66AB8F","#8EAC6A","#C1A45A","#E99872")
sizes$Size_Cat <- factor(sizes$Size_Cat,
levels = c("n1_4","n5_9","n10_19",
"n20_49","n50_99","n100_249",
"n250_499","n500_999","n1000",
"n1000_1","n1000_2","n1000_3",
"n1000_4"))
sizes$market <- factor(sizes$market,
levels = c("NYC","LA","CHI","DC","SF","BOS"))
sizes <- sizes %>%
filter(market %in% c("NYC","SF"),
Size_Cat %in% c("n50_99","n100_249","n250_499"))
g <- ggplot(sizes)
g + geom_bar(stat = "identity",
position = "dodge",
aes(x = market,
y = firms,
fill = industry),
color = "grey") +
scale_fill_manual (values=colors17) +
facet_wrap(~ Size_Cat) +
labs(y = "Number of Companies", title = "Market Structure") +
theme(strip.text.x = element_text(size = 8),
axis.text.x = element_text(angle=90, size=6))
「連接」源文件是在http://www.mvabl.com/Dashrock/MySQL_connect_query.R網站(正好從代碼塊上述網址)上公開可見的,但我沒有散出來的PW,所以這不是可執行文件。 (我不知道如何屏蔽代碼訪問我的數據庫的密碼。)
最後,在我的第三方MySQL客戶端(Sequel Pro & MySQL Workbench)中,sizes
表顯示沒有問題。
任何人都可以發現問題嗎?或者,甚至更好,告訴我如何自己診斷它?
Thx
更換
是否錯誤信息顯示在其行中的出錯內容時發生? –
不。它只是在帶有該錯誤消息的瀏覽器選項卡中打開。而在RStudio中,根本沒有錯誤信息。我試着在各個地方添加一行'test1 < - 「PASSED」'來查看我是否能找到代碼破解的地方。 (我不知道R中的任何跟蹤錯誤函數)。這沒有提供任何幫助。 – Steve
看看這個http://shiny.rstudio.com/articles/debugging.html有幫助。此外,它可能是有幫助的,如果你張貼的UI代碼 –